公开(公告)号：US20220038748A1

公开(公告)日：2022-02-03

申请号：US17390509

申请日：2021-07-30

Applicant: ATEME

Inventor： Thomas Guionnet ,  Sébastien Herbreteau

IPC: H04N19/85 ,  G06T5/00

Abstract: A method of processing an image is proposed, which includes: determining, based on the image, one or more noise templates, wherein each of the one or more noise templates includes noise pixels representing noise contained in the image; calculating one or more first autocovariance values, based on the noise pixels of at least one of the one or more noise templates; based on the one or more first autocovariance values, selecting an entry of a noise model database among database entries which respectively include values of noise model parameters corresponding to a noise model.

公开(公告)号：US20210344968A1

公开(公告)日：2021-11-04

申请号：US17307339

申请日：2021-05-04

Applicant: ATEME

Inventor： Thomas GUIONNET ,  Sébastien HERBRETEAU

IPC: H04N19/86 ,  H04N19/182 ,  G06T5/00 ,  G06T5/50

Abstract: A method of method of processing an image includes: determining estimates of parameters of an auto-regressive, AR, parametric model of noise contained in the image, according to which a current noise pixel is computed as a combination of a linear combination of P previous noise pixels in a causal neighborhood of the current noise pixel weighted by respective AR model linear combination parameters (φ1, . . . , φP) with a generated noise sample corresponding to an additive Gaussian noise of AR model variance parameter (σ), generating a noise template of noise pixels based on the estimated AR model parameters, wherein the noise template is of a predetermined pixel size smaller than the pixel size of the image, determining an estimate (σP) of a variance of the noise template, and based on a comparison of the estimated variance (σP) with a predetermined threshold (Tσ), correcting the AR model variance parameter (σ).

公开(公告)号：US20210343045A1

公开(公告)日：2021-11-04

申请号：US17307419

申请日：2021-05-04

Applicant: ATEME

Inventor： Thomas GUIONNET ,  Sébastien HERBRETEAU

IPC: G06T9/00 ,  G06T5/00 ,  H04N19/119 ,  H04N19/98 ,  H04N19/142 ,  H04N19/172

Abstract: A method of method of processing an image of a video sequence including a plurality of images, wherein the video sequence is divided into a sequence of consecutive subsets each including one or more consecutive images of the video sequence is provides, which includes: determining, among the consecutive subsets, a current subset that includes the image, upon determining that the image is a first image of the current subset to be processed, determining an analysis window corresponding to the current subset, wherein the analysis window includes a plurality of consecutive images of the video sequence, and includes at least one image of the current subset, and generating processing results for the image by performing a processing on the images of the analysis window.

公开(公告)号：US10911785B2

公开(公告)日：2021-02-02

申请号：US16196218

申请日：2018-11-20

Applicant: ATEME

Inventor： Elie Gabriel Mora

IPC: H04B1/66 ,  H04N7/12 ,  H04N11/02 ,  H04N11/04 ,  H04N19/85 ,  H04N19/146 ,  H04N19/136 ,  H04N19/117 ,  H04N19/172 ,  H04N19/86 ,  H04N19/19 ,  H04N19/115 ,  H04N19/103 ,  H04N19/147

Abstract: A method for processing a video stream prior to encoding, the video stream potentially comprising a film grain, the method comprising: measuring a film grain intensity in the video stream; obtaining at least one encoding rate information item associated with the video stream, in order to determine a pair of respective values for the grain intensity and encoding rate; comparing the pair values with predetermined respective threshold values in order to categorize the video stream with respect to pairs of predetermined values of grain intensity and rate; and selecting a film grain management strategy among at least four combinations based on the categorization of the video stream.

公开(公告)号：US10742987B2

公开(公告)日：2020-08-11

申请号：US15569446

申请日：2016-04-20

Applicant: ATEME

Inventor： Pierre Larbier

IPC: H04N19/136 ,  H04N19/142 ,  H04N19/177 ,  H04N19/51 ,  H04N19/194 ,  H04N19/14 ,  H04N19/172 ,  H04N19/132 ,  H04N19/46

Abstract: Disclosed is a method for analyzing a set of images of a video sequence with a view to performing a processing of the sequence. The method includes: determining, in the video sequence, a plurality of disjointed consecutive sub-sequences of at least one successive image according to the type of processing to be carried out and according to the content of the video sequence; and analyzing the images of each sub-sequence determined in the video sequence.

公开(公告)号：US20200021808A1

公开(公告)日：2020-01-16

申请号：US16507606

申请日：2019-07-10

Applicant: ATEME

Inventor： Elie MORA

IPC: H04N19/117 ,  G06T5/00 ,  G06T5/50 ,  H04N19/154 ,  H04N19/172 ,  H04N19/196 ,  H04N19/80 ,  H04N19/139

Abstract: The disclosure relates to a method for processing the noise of a stream comprising a series of images, comprising spatial filtering of a current image In in order to obtain a spatially filtered image Sn; determining a motion vector for each block B of pixels of the image Sn, from a single image Sn-1; calculating a confidence index αn[B] for each block B of image In, from the motion vector determined for B; constructing a temporal filter from the calculated confidence indices αn[B] and applying the temporal filter to the current image In in order to obtain a temporally filtered image Tn; spatial filtering of the current image In in order to obtain a spatially filtered image Dn where Dn can be equal to Sn, and obtaining a temporally and spatially filtered image Rn by applying a function combining image Tn and image Dn.

公开(公告)号：US20190281337A1

公开(公告)日：2019-09-12

申请号：US16280459

申请日：2019-02-20

Applicant: ATEME

Inventor： Thomas Guionnet

IPC: H04N21/2662 ,  H04N21/2343 ,  H04N21/238

Abstract: A method, implemented by computer means, for digitally encoding multimedia content into one or more video streams for on-demand distribution to at least one receiving terminal, the method comprising the following steps: from a given set of profiles, each profile being characterized by a value of at least one encoding parameter, forming one or more ordered groups of profiles, it being possible for a same profile to be present in multiple groups, such that in each group, each profile and its immediate successor satisfy a first predetermined condition, and selecting from the formed groups at least one group of profiles satisfying a second predetermined condition.

公开(公告)号：US20190158885A1

公开(公告)日：2019-05-23

申请号：US16196218

申请日：2018-11-20

Applicant: ATEME

Inventor： Elie Gabriel Mora

IPC: H04N19/85 ,  H04N19/117 ,  H04N19/136 ,  H04N19/146

Abstract: A method for processing a video stream prior to encoding, the video stream potentially comprising a film grain, the method comprising: measuring a film grain intensity in the video stream; obtaining at least one encoding rate information item associated with the video stream, in order to determine a pair of respective values for the grain intensity and encoding rate; comparing the pair values with predetermined respective threshold values in order to categorize the video stream with respect to pairs of predetermined values of grain intensity and rate; and selecting a film grain management strategy among at least four combinations based on the categorization of the video stream.

公开(公告)号：US12034936B2

公开(公告)日：2024-07-09

申请号：US18098534

申请日：2023-01-18

Applicant: ATEME

Inventor： Abdelmajid Moussaoui ,  Thomas Guionnet ,  Sassan Pejhan

IPC: H04N19/156 ,  H04N19/154 ,  H04N21/24

CPC classification number: H04N19/156 ,  H04N19/154 ,  H04N21/2402

Abstract: A method for managing computational resources allocated for encoding of one or more multimedia content streams for distribution in dynamic mode to viewing devices through a distribution network is proposed, which comprises, by a processing node of the distribution network: obtain, for a multimedia content stream corresponding to a channel distributed to the viewing devices, a value of a computational resource allocation criterion, wherein the computational resource allocation criterion comprises an audience measurement for the corresponding channel; and determine, based on the computational resource allocation criterion, an allocation of computational resources of a computing platform configured for encoding the multimedia content stream.

公开(公告)号：US11948335B2

公开(公告)日：2024-04-02

申请号：US17307419

申请日：2021-05-04

Applicant: ATEME

Inventor： Thomas Guionnet ,  Sébastien Herbreteau

IPC: H04N19/119 ,  G06T5/00 ,  G06T9/00 ,  H04N19/142 ,  H04N19/172 ,  H04N19/98

CPC classification number: G06T9/00 ,  G06T5/009 ,  H04N19/119 ,  H04N19/142 ,  H04N19/172 ,  H04N19/98 ,  G06T2207/20204 ,  G06T2207/20208

Abstract: A method of method of processing an image of a video sequence including a plurality of images, wherein the video sequence is divided into a sequence of consecutive subsets each including one or more consecutive images of the video sequence is provides, which includes: determining, among the consecutive subsets, a current subset that includes the image, upon determining that the image is a first image of the current subset to be processed, determining an analysis window corresponding to the current subset, wherein the analysis window includes a plurality of consecutive images of the video sequence, and includes at least one image of the current subset, and generating processing results for the image by performing a processing on the images of the analysis window.